shear

shear
/ shi(ə)r/
•
v.
(past part. shorn
/ shôrn/ or sheared
)
1.
[tr.]
cut the wool off (a sheep or other animal). ∎
cut off (something such as hair, wool, or grass), with scissors or shears:
I'll shear off all that fleece. ∎ (be shorn of)
have something cut off:
they were shorn of their hair |
fig. the richest man in the U.S. was shorn of nearly $2 billion.2.
break off or cause to break off, owing to a structural strain:
[intr.]
the derailleur sheared and jammed in the rear wheel |
[tr.]
the left wing had been almost completely sheared off.•
n.
a strain in the structure of a substance produced by pressure, when its layers are laterally shifted in relation to each other.See also wind shear.
DERIVATIVES:shear·er
n.

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shear

shear.1. Force that can break, e.g., a beam near its point of support, if that force is greater than the strength of a beam. The effect is similar to that of, e.g., a pair of scissors on hair, i.e. the force acts transversely to the axis of a structural member.

2. If a beam is composed of several horizontal layers, a weight will cause the beam to bend, so the horizontal layers will slide horizontally over each other. Shearing is therefore a cutting or sliding process.

Bibliography

Mitchell (1953)

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